Probably no real human in the loop. This is a bot scrapping Chinese retailers and automatically creating several Amazon "sellers", with descriptions generated from whatever photos the retailer page had. The products are likely shipped either from China or bought in bulk and kept in a subcontracted storage somewhere in USA. It doesn't matter is 90% of the "sellers" end being flagged and deleted, they can create thousands more and eventually someone will buy their crap.

This pollutes the marketplace to the point where I gave up trying to find any real product on it, but Amazon actually encourages this behavior. They automatically label and classify "products" in their store because the titles, descriptions and tags from Chinese resellers are abysmal and discoverability would be impossible otherwise.